#include <iostream>
#include "asio.hpp"

using asio::ip::tcp;

int main(int argc, char* argv[])
{
    try
    {
        if(argc != 3)
        {
            std::cerr << "Usage: " << argv[0] << "<host> <port>" << std::endl;
            return 1;
        }

        asio::io_context io_context;

        tcp::resolver resolver(io_context);
        tcp::resolver::results_type endpoints = resolver.resolve(argv[1], argv[2]);

        tcp::socket socket(io_context);

        asio::connect(socket, endpoints);

        for(;;)
        {
            std::array<char, 128> buf;

            asio::error_code error;

            size_t len = socket.read_some(asio::buffer(buf), error);

            if(error == asio::error::eof)
            {
                break;    // Connection closed cleanly by peer.
            }
            else if(error)
            {
                throw asio::system_error(error);    // Some other error.
            }

            std::cout.write(buf.data(), len);
        }
    }
    catch(std::exception& e)
    {
        std::cerr << e.what() << std::endl;
    }
    return 0;
}